Teat-working mechanism of milking-machines.



0.1.1. H'A'GG.

TEAT WORKlNG MECHANISM OF MILKING MACHINES.

APPLICATION FILED MAR. 25. 1918.

1,298,694, I Patented Apr. 1,1919.-

STATES PA N F C if.QCARL TJQACOIB aonnn Elise, or srocKHoLM, SWEDEN.

TEACH-WORKING- MECHANISM OF MILKING-MACHINEE}. 1 l

. Toall whom it may concern: 1 I 7 Be'it' known that I, CARL JACOB JOHAN 'Hiiee, a subject of the King of Sweden, re-

-sidii1g at Stockholm, Sweden, have invented new and useful, Improvements in Teatj Working Mechanisms of Milking-Machines, of which the following is a specification.

' The present invention refers to an improvement in such teat working mechanisms worked'between two plates, movable to and from each other, in such a way upper part of the'plates first shuts ofi'the ,mi1k .-in'.t he teats whereupon the other part of the plates closes and squeezes out the milk from the teats. j The characteristics of the imp ovement consist; in that each plate, which is pivoted between its upper .and

' .-,lower end one membermovable toand from thelfteatgand tending [by means of spring sothat the plate, during the further movementof the movable member, turns on the .te atrootandjsuccessively places itself upon .the' teat along the whole length of the latter, accompanied by a continuous increase of the spring power and, at the same. time, owing to the pivotal arrangement of the plate upon I the member, by a consequent increase of the ,closi'ng power at the teat root. -By this means there is gained, in addition to the fact thatonlyone common driving device willbefneeded for shutting off the ,milkin 1 the teatjfrom theudder, and for squeezing .out the milk from'the teat,',also.the fact that a. permanent adjusting. device regulating the closing. pressure at the teat rootwill become superfluous and that the machine will be self-adjusting, 'not only. for various teat 3 v.thickness' ofthe .sarne udder, but also for eadi'fierent cows, so that the same machine Specification of Letters Patent.

"offmilking machinesin which the teats are that the I pewer to maintain itsvlower end at a distance fromthe tfeat a'gainst the action of a driving-deviceoperating the said member, jnrestslin its, outer position by the action of'a spring 'Ldevice. freely upon a stationary ,narned pressure. reaching such degree, the

dIlVlDg device overcomes; the springpower can, without further adjustment, be employed for milking different, cows. It is evident that this will mean an essential simplification of the milking machine and a more advantageous working of the same.

In the annexed drawing a constructional form of an improvement according to the present invention is illustrated as an ex- Each teat-working mechanism is carried by an arm 1 by means of a rectangular frame 2 provided with two opposite, upward-extending flanges 3 which are yielding and corrugated. Another rectangular frame t-haS a shaft 6 outside each of two opposite sides of the same, journaled in ears 5 on the frame. The frame 4: is kept on theframe 2 by the shafts 6 being engaged in the corrugated flanges 3, and the end edges of these latter rest on the ears 5. On the ends of the shafts 6 extending through the ears 5 there aresecured upward-extending arms 7 which at the top are connected two and two by means of shafts 8, the said shafts 8 going freely through two arms 9 extending downward in the frame 4; near the arms 7,.the lower ends of the arms 9 being connected by a rod 10. 11 are'two teat-working plates and 12 two springs. The plates 11 form at their lower edges spring-holders 13, by means of which they catch the shaft 10, so that they. are pivoted on the same. Almost half-waybetween the upper and lower end the plates 11 are provided with spring holders 14 by means of which they engage in the shaft 8 so that they are pivoted on the same. The springs 12 at their upper ends are likewise formed like elastic holders by means of which they engage in the shaft 10 so that they are pivoted on the same. The plates 11 shown are themselves unyielding and are,besides, stiffened by means of the parts 9 and 10. The frame 4 forms shoulders on which, in consequence of the action of. the springs 12, the lower end of the plates 11 freely rest. in the positions of the plates 11 shown in Figs. 1 and 2. A cot 15 of indiarubber for the teat 26 is, at the top,

PatentedApr. 1, 1919. v :Application filed March 25, 1918. Serial 1N0. 224,589. i

hinged to the plates 11, for whichi'pu-rpose I these latter andthe not are shownprovided with edges bent to the form of sleeves 16 and 17 the sleeves =17 of the cot entering into a space between the sleeves 16 of the plates and a pin 18 being introduced into the said sleeves. The cot extends downward between the springs 12. A guide-ring 19 for the teats is carried above the plates 11- by two uprights 20 whichare pivoted on the said ring and which are providedbelow with holders 21, by imeans of which they are fixed on the frame 41 For driving "the teat-working plates there is employed a flexible pipe 22 and a string '23 introduced into-the same, *the said pipe and string being .movable :in relation to each other. The

string23 is connected with one end of'one' shaftBand thepipe 22 with one end ofthe other shaft 8, so that the drivingdevice of the plates 11 will operate them centrally as regards the height direction. One of the springs '12 can beleft out and only thatone be retained which is'arranged on that'side wherethe said string-and pipe are-attached.

In-orderthat the plates 11 may have a similar .movement and meet half way, a link square is arranged which is formed bythe pipe'22, a projection 24 on frame 4, the

adjacentarm 7 and a link'25 between the pipe 22 and the projection .24, which said link 25 is parallel to the arm 7.

The improvement shown and described worksas follows:

When'a pull is'eXerted on the string 23 v and pressure is applied to the pipe '22 by means of a suitable driving device, the upper parts of the'plates 11 are first brought together from the position shown in Fig. 1 to'the position shown in Fig. 2. and'squeeze theteatatthe teat root and shut off the milk in the teat from the rudder, while, at the same"t1methexplates 11 at the-lower ends 7 rest andturn on the frame 4. During the continued moving of theiplates'to the posi- "tion shown in Fig. 3, theplates at their upper end'will rest and turn on the teat root and successively approach each other from above downward, at the same increasing the tension of the spring 12 and squeezing out the milk from the teat. But in consequence ofthe plates 11 being pivoted on the shafts 8, the increased tension of the springs 12 'will workmore and more powerfully in closingthe upper parts of the plates 11 at the teat root,'so that this closing at the teatroot will be effective during the entire milking movement of the plates 11, and will be greater than at other points of the teat pro vided that the springs 12 are of sufficient strength. Special members with adjusting devices for closing the plates 11 are thus made superfluous. The eflective closing pres'sure'at the teat root will notbe reached until the resistance at the teat root operates theresistance of the springs. By this :it is cle'a'rthat athick as well as "a 'thin teat always will get the same pressure at the teat root, and it :lSjjllSli this thatisaimed at because by this means the injurious action of the compression o'fte'ats: of various thickness is avoided. Itis also seen that the closing pressure at the teat root will be greater according as the teat is successively compressed in-its longitudinal direction, so that,

when the milk is compressed in the teat in order to open the teat muscles, this milk willnot return into "theudder. I

By some parts of "the improvement being held fast by means of spring-holders they can be easily removed for cleaning. Of course, the springs '12 can "be replaced by some other spring device which tends to move the lower partsofthe' plates 11 apart from each otherand to facilitatetheabovenamed action for closing theteata-t theteae root with the power required, independently of the driving device oftheplates. Tn'ad dition, the details of theimprovementc'an vary as regards size,material,number, form "and composition and th'ey'can also be "re-- versed provided that the characteristic features of the invention be retained.

What I claim is:

'1. A milking machine comprising japair of removable teat-engaging members capable of occupying one extreme. position wherein they are in parallelism, an intermediate position wherein theyaredisposed-inconvergent relation, and another extremej posi tion which is determinedlby the shape of' theteat and means for successively actuating said members to the three different positions. 7 V

2. A milking machine 'comprisingja'pair of teat-engaging members capable "of 'oc-,

cupying two extreme'positi'ons and anintermediate position, means for biasing said members to one of their extreme positions, and means for moving said members t'o' the other positions against said means.

A milking machine comprising a pair of teat-engaging members 'biasedto predetermined positions and pivotally mounted for swinging movement 'inopposite direcating said members simultaneously.

4. A milking machine comprising a pair of teat-engaging members pivotally mounttion against'theirbias, andmeans for actu- 'gjto first grip the motel? a teat and to then successively compress the teat from its root a to :the outer end thereof, and to simultaneously increase the grip of the members on the root.

.6. LA milking'machine comprising a pair' of teat-engaging members pivo-tally mounted at a plurality of points and biased to predetermined positions, and mechanismfor actuating said members against their bias to first grip the root of a teat, to successively compress the teat from its root to the outer end thereof, and to simultaneously increase I the grip of the members on the root.

7;}A milking machine comprising a pair of; i'fvertically disposed plates pivotally mounted at their lower ends and intermediate their ends, biasing means engaging the [lower ends of said plates for biasing the ("same away from each other, and means engageable with certain of the pivot points 7 for actuating said plates to first occupy convergent positions relatively and to then the teat longitudinally toward its outer end,

and to simultaneously increase the gripping action of the members at the root of a teat.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL JACOB J OI-IAN HZiGrGr.v

Witnesses:

J. F. A. RU'IHACK, E. Moreno.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, C Washington, D. 0. 

